Vehicle Segment:
Dual-sport / Adventure motorcycle, known for its versatility on both pavement and light off-road conditions.
Target Audience:
Riders seeking a capable and reliable machine for commuting, touring, and light adventure riding.
Key Competitors:
BMW F650GS (earlier models), Kawasaki KLR650, Suzuki DR650, Honda XR650L.
Engine Configuration:
Single-cylinder, 4-stroke engine, offering a balance of tractable power and manageable weight.
Chassis Design:
Steel frame with distinctive styling, available in Strada (more road-biased) and Trail (more off-road capable) variants, differing primarily in wheel size and suspension setup.
Brand Philosophy:
Aprilia's reputation for performance-oriented motorcycles with European flair.
Model Years Covered:
1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
Variants Covered:
Strada, Trail
Estimated Page Count:
400-500
Manual Type:
Factory Service Manual / Repair Manual
Language:
English (Assumed, typical for dealer service manuals of this era)
Format:
Digital (PDF) / Printable
Engine Mechanics:
Complete engine disassembly, assembly, inspection, and repair of all internal components (pistons, rings, valves, crankshaft, camshafts, lubrication system).
Fuel System:
Carburetor (Mikuni BSR42) system diagnosis, adjustment, rebuilding, fuel injection system (if applicable to specific models/years within range), fuel pump, fuel filter replacement.
Ignition System:
Ignition coil testing, spark plug specifications, CDI unit diagnosis, timing procedures.
Cooling System:
Radiator, coolant hoses, thermostat, water pump inspection and replacement, coolant type and capacity.
Transmission Drivetrain:
Clutch operation, adjustment, and replacement; gearbox disassembly, inspection, and repair; chain and sprocket maintenance, replacement intervals, and adjustment.
Suspension Steering:
Front fork disassembly, seal replacement, oil type and level specifications; rear shock absorber inspection and replacement; steering head bearing adjustment and replacement; swingarm maintenance.
Braking System:
Brake fluid type and bleeding procedures; front and rear brake caliper inspection, overhaul, and replacement; brake pad specifications; master cylinder and slave cylinder maintenance.
Electrical System:
Wiring diagrams, starter motor testing and repair, alternator and regulator testing, battery specifications and maintenance, lighting system diagnosis, fuse box layout, accessory wiring.
Bodywork Chassis:
Fairing removal and installation, seat, fuel tank, fenders, and other body component servicing.
Routine Maintenance:
Oil and filter changes, air filter cleaning/replacement, spark plug replacement, chain lubrication and adjustment, brake and clutch lever adjustment, tire pressure checks.
Troubleshooting Guides:
Step-by-step diagnostic procedures for common and uncommon issues across all major systems.
Component Overhaul Rebuild:
Detailed instructions for rebuilding carburetors, fuel pumps, brake calipers, and engine components.
Wheel Tire Service:
Wheel bearing inspection and replacement, tire mounting/dismounting (where applicable or recommended).
Electrical Diagnostics:
Testing of electrical components using multimeters, troubleshooting wiring faults.
Diagnostic Capabilities:
Advanced diagnostics, including specific tests for sensors, actuators, and electrical modules.
Repair Procedures:
Comprehensive repair instructions for both minor and major mechanical and electrical issues, suitable for professional technicians and experienced DIYers.
Specification Data:
Detailed torque specifications, clearances, fluid capacities, and electrical system parameters.
Special Tools:
Identification of any specialized tools required for specific procedures.
Engine Type:
4-stroke single-cylinder, 4-valve, DOHC (Dual Overhead Camshaft)
Displacement:
652 cc (approximately)
Bore X Stroke:
100 mm x 83 mm (typical for Rotax 654 engine)
Cooling System:
Liquid-cooled
Horsepower Approximate:
48-50 HP @ 6,250 RPM (stock specification)
Torque Approximate:
60 Nm (44 lb-ft) @ 4,750 RPM (stock specification)
Fuel Delivery:
Carburetor: Mikuni BSR42 (most common) or potentially early fuel injection systems on later models/variants. The manual will cover the specific system for the years.
Fuel Type:
Unleaded gasoline (95 RON recommended)
Oil Type:
SAE 10W-40 or 15W-50, API SG or higher (refer to manual for exact specification)
Oil Capacity:
Approx. 2.4 - 2.6 liters (with filter change) - verify in manual.
Safety Ratings:
Motorcycle safety is primarily determined by rider skill and adherence to safe operating practices. Official crash ratings are not typically issued for motorcycles in the same way as cars.
Braking System:
Hydraulic disc brakes front and rear. Early models may have optional ABS; later models might be equipped. Manual will detail ABS functionality if present.
Lighting:
Headlight, taillight, brake light, turn signals.
Frame Construction:
Robust steel frame designed for stability.
Ergonomics:
Upright riding position providing good visibility and control.
Oil Change Interval:
Typically every 5,000 - 10,000 km or annually (refer to manual for exact interval based on usage).
Air Filter Service:
Inspect every 5,000 km, clean/replace as needed.
Spark Plug Replacement:
Typically around 10,000 - 15,000 km, depending on plug type and condition.
Valve Clearance Check:
Typically every 10,000 - 20,000 km (critical check).
Chain Maintenance:
Lubricate and adjust chain every 1,000 km or after riding in wet conditions.
Engine Oil:
SAE 10W-40 or 15W-50, API SG or higher. Specific Aprilia approval if noted in manual.
Coolant:
Ethylene glycol based coolant, 50/50 mix with distilled water. Specific type or additive may be recommended by Aprilia.
Brake Fluid:
DOT 4 recommended for hydraulic brake systems.
Fork Oil:
Specific viscosity and level (e.g., SAE 7.5 or 10W), capacity per fork leg to be verified in manual.
Common Wear Items:
Clutch plates, fork seals, wheel bearings, chain and sprockets, rear shock absorber (depending on mileage and maintenance).
Electrical Gremlins:
Intermittent electrical issues can sometimes occur due to vibration or age; thorough wiring diagram consultation is key.
Carburetor Maintenance:
Mikuni carburetors can require occasional cleaning and adjustment, especially with varying fuel quality or prolonged storage.
Aprilia Legacy:
Founded in 1945, Aprilia is an Italian manufacturer with a strong racing pedigree, particularly in smaller displacement classes, known for innovation and performance.
Pegaso Lineage:
The Pegaso line has a history of dual-purpose motorcycles. The 650 model evolved over time, adapting to market trends and technological advancements, with the Strada and Trail variants offering distinct capabilities within the same platform.
Engine Source:
Many Aprilia 650 models of this era utilized the robust Rotax 654 engine, a well-regarded single-cylinder unit.
Production Period:
The Pegaso 650 was produced for a significant period, with this manual covering the 1997-2005 generation.
Manufacturing Location:
Primarily Italy.